album_art_extractor_instance_fileref

#include <album_art_helpers.h>

Inheritance diagram for album_art_extractor_instance_fileref:

Data Structures
struct	t_fileref

Public Member Functions
	album_art_extractor_instance_fileref (file::ptr f)
bool	have_item (const GUID &p_what)
bool	is_empty () const
album_art_data_ptr	query (const GUID &p_what, abort_callback &p_abort)
void	set (const GUID &p_what, t_filesize p_offset, t_filesize p_size)
Public Member Functions inherited from album_art_extractor_instance
bool	query (const GUID &what, album_art_data::ptr &out, abort_callback &abort)
Public Member Functions inherited from service_base
template<typename outPtr_t >
bool	cast (outPtr_t &outPtr)
virtual int	service_add_ref ()=0 throw ()
virtual bool	service_query (service_ptr_t< service_base > &p_out, const GUID &p_guid)
template<class T >
bool	service_query_t (service_ptr_t< T > &p_out)
virtual int	service_release ()=0 throw ()

Private Attributes
pfc::map_t< GUID, album_art_data::ptr >	m_cache
pfc::map_t< GUID, t_fileref >	m_data
const file::ptr	m_file

Additional Inherited Members
Public Types inherited from service_base
typedef service_base	t_interface
Protected Member Functions inherited from service_base
	service_base ()
	~service_base ()

Detailed Description

Helper - a more advanced implementation of album_art_extractor_instance.

Definition at line 98 of file album_art_helpers.h.

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Data Structure Documentation

struct album_art_extractor_instance_fileref::t_fileref

Definition at line 124 of file album_art_helpers.h.

Data Fields
t_filesize	m_offset
t_filesize	m_size

Constructor & Destructor Documentation

album_art_extractor_instance_fileref::album_art_extractor_instance_fileref ( file::ptr  f )

inline

Definition at line 100 of file album_art_helpers.h.

: m_file(f) {}

Member Function Documentation

bool album_art_extractor_instance_fileref::have_item ( const GUID &  p_what )

inline

Definition at line 108 of file album_art_helpers.h.

                                        {
        return m_data.have_item(p_what);
    }

bool album_art_extractor_instance_fileref::is_empty ( ) const

inline

Definition at line 122 of file album_art_helpers.h.

{return m_data.get_count() == 0;}

album_art_data_ptr album_art_extractor_instance_fileref::query ( const GUID &  p_what, abort_callback &  p_abort  )

inlinevirtual

Throws exception_album_art_not_found when the requested album art entry could not be found in the referenced media file.

Implements album_art_extractor_instance.

Definition at line 112 of file album_art_helpers.h.

                                                                           {
        album_art_data_ptr item;
        if (m_cache.query(p_what,item)) return item;
        t_fileref ref;
        if (!m_data.query(p_what, ref)) throw exception_album_art_not_found();
        m_file->seek(ref.m_offset, p_abort);
        item = album_art_data_impl::g_create(m_file.get_ptr(), pfc::downcast_guarded<t_size>(ref.m_size), p_abort);
        m_cache.set(p_what, item);
        return item;
    }

void album_art_extractor_instance_fileref::set ( const GUID &  p_what, t_filesize  p_offset, t_filesize  p_size  )

inline

Definition at line 102 of file album_art_helpers.h.

                                                                         {
        const t_fileref ref = {p_offset, p_size};
        m_data.set(p_what, ref);
        m_cache.remove(p_what);
    }

Field Documentation

pfc::map_t<GUID, album_art_data::ptr> album_art_extractor_instance_fileref::m_cache

private

Definition at line 129 of file album_art_helpers.h.

pfc::map_t<GUID, t_fileref> album_art_extractor_instance_fileref::m_data

private

Definition at line 128 of file album_art_helpers.h.

const file::ptr album_art_extractor_instance_fileref::m_file

private

Definition at line 127 of file album_art_helpers.h.

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The documentation for this class was generated from the following file:

• foobar2000/SDK/album_art_helpers.h